CVE-2026-115845 — Incomplete validation in the run_script Python sandbox in AWS MCP Server
An incomplete list of disallowed inputs in the Python code validator of the run_script tool in AWS MCP Server might allow an authenticated remote user to execute arbitrary code …
Published: 2026-10-23 · CVSS: 5.3 · CVSS 4.0
An incomplete list of disallowed inputs in the Python code validator of the run_script tool in AWS MCP Server might allow an authenticated remote user to execute arbitrary code within their own isolated session environment via a crafted script. AWS fixed this issue service-side. No customer action is required.
Source: CVE Program · Revision 67049a6ac0276e5278509cc634ab61c5a651ac19